VXR Turbo Install on Z20LET Astra G

Astra Turbo. In depth installation guide of Z20LEH turbo unit in a MK4 Opel Astra with Z20LET engine.

This is a one man job and can be done easily if you have the confidence and the right tools.

With recommended oil restriction mod.

[tjkye]

I don't even have a astra but I still love watching your vids

[chrispix]

Good tip Hans. The restriction bolt is recommended with the VXR (LEH) turbo on the Z20LET engine as the Z20LEH feeds lower pressure to it's turbo due to the under piston oil jets. Or so I have heard.
Watching the video will answer your question of whether I had installed the restrictor though :)

[andyedge]

Thanks to this guide ive done this job twice now, gave me the confidence to try it.

[Richard]

The break off pressure on the Z20LET is set at 9psi and the break off on the VXR is set at 10psi if I recall so really is minimal.

The boost controller bleeds off pressure to the actuator to ge the higher boost anyway and the boost is all electrically controlled.

[chris_rrr]

On a Holden none the less.. picked up on the wheels. I'm am Adelaide boy.. respect these cars most than most Aussies. Lol

[kybiras]

if its not leaking, if theres no weird noises and if no strange sounds from turbo and it accelerates OK so no worries mate - you're good to go :)
You see yours Astra is not even leaking. Mine does.
Btw i was not joking about leaking Ecotecs. I remember i was reading some car magazine ca. 10 years ago where they tested a new Opel Vectra Caravan 2.0 DTI ecotec. They drove from Berlin to Warsaw with it. And it was already leaking.The journalists then adressed the GM who said it was coincidence

[chrispix]

@DazzlinDaryn1987 It's just a straight swap for a standard engine. Nothing needs to be upgraded unless you are after more power.

The difference if kept standard is boost comes on a fraction higher in the rev range but it holds on where the original turbo would lose it's breath.
I wouldn't call it a power increase though.

But if you are after more power, then this turbo is a great starting point.

[Musterhund]

absolut großartiges Video! Ich fürchte aber, dass viele Schrauben nicht so leicht zu lösen sind!

[ILOVEFIATBRAVA]

this is the most worth video on youtube . i like this and that teachs me much things

[andisadler]

I have Z20LET still ok at the moment my turbo is but this video is definatly going to help me in future as im looking at upgrading to the VXR turbo. Their a straight fit and basically same engine apart from a few upgrades like forged pistons, under piston oil etc etc. Excellent video though. Check CS Autos in Liverppol for all GSI, SRI, VXR Parts.

[chrispix]

Let me know, how long did it take for you to install the turbo. Anyone quicker than 9 minutes?

[darrenbremner]

Love the video. It gave me enough info to give it a try myself. My Holden Astra SRi now has a new VXR turbo to replace the noisy Z20LET one that was on it's way out (175k). The feels like new. Whoever put those air conditioner pipes where they block the turbo and put those bottom studs in the most inaccessable places should have been shot. 3 hours real actual work, many more hours and cramped hands with those bottom studs and bolts. Cheers.

[davor]

Amazing video, dude you're the best

[chrispix]

Yeah people say to do that, but the ECU controls the boost. Installed this turbo 3 years ago and it still safely peaks at 12psi which is stock for the Z20LET.

[chrispix]

I guess it depends how you treat your car. If it's tuned for more power and the turbo is boosting higher than standard then there is more chance of it not lasting long.

[UKfromadrone]

7years since the video been released...

and im just sitting here thinking about turbocharging my 1.8 astra coupe z20let...

[lion]

@chrispix thanks, but my mechanic don't find a problem.. the livel oil is ok! i change: timing belt, head gasket, rocker cover gasket, oil, filter oil, filter air, filter benzin, water pump and candles...

[Richard]

Oil restrictor bolt wasn't a Vauxhall fitment or recall its an aftermarket modification by a guy called percy from VXRo.

[vuss]

Top video mate, when my vxr turbo dies I will put hybrid on. Good for a inside on how its done

[drummerboi]

firstly i must say i very good video it helped me so much might be a stupid question, when you put the two nuts onto the thread is one off the nuts a reverse thread ?